<!--       
        if (document.images) {
			img1on = new Image();          
            img1on.src = "/img/btn_household_on.gif"; 
			img1off = new Image();          
            img1off.src = "/img/btn_household_off.gif";
			img2on = new Image();          
            img2on.src = "/img/btn_landscape_on.gif"; 
			img2off = new Image();          
            img2off.src = "/img/btn_landscape_off.gif";
			img3on = new Image();          
            img3on.src = "/img/btn_trees_on.gif"; 
			img3off = new Image();          
            img3off.src = "/img/btn_trees_off.gif";
            img4on = new Image();          
            img4on.src = "/img/btn_weeds_on.gif"; 
			img4off = new Image();          
            img4off.src = "/img/btn_weeds_off.gif";
			img5on = new Image();          
            img5on.src = "/img/btn_commercial_on.gif"; 
			img5off = new Image();          
            img5off.src = "/img/btn_commercial_off.gif"; 
			img6on = new Image();          
            img6on.src = "/img/btn_services_on.gif"; 
			img6off = new Image();          
            img6off.src = "/img/btn_services_off.gif";     
            
        }
// Function to 'activate' images.
function imgOn(imgName) {
        if (document.images) {
            document.images[imgName].src = eval(imgName + "on.src"); 
        }
}
// Function to 'deactivate' images.
function imgOff(imgName) {
        if (document.images) {
            document.images[imgName].src = eval(imgName + "off.src");
        }
}
// -->